Family: Solitary, gregarious, or colonial; most are aloricate, some form lorica; each zooid has its own,
independently contractile myoneme in full length of stalk.
Genus: Colonial; each zooid has a separately contractile myoneme
(Illustrated Guide, 1985).
Each animal has its own myoneme, can contract singly without causing colony to contract (How to know the
protozoa, 1979).